I like this test because it's extremely consistent and stable despite the low number of games, in fact, I got this exact same result two times before with the Betas, including a test at 1+'10 time controls, and in another I got a 8.5/16 result but only because Rybka blew a drawn game. That Rybka hasn't improved only means that the new TC defaults aren't helping her in these conditions, and indeed she seems to be playing too slow at the start of the game. A main difference from the Betas is that the draw% has dropped from 50-56% to 37.5% with a long string of decided games. When in doubt, Rybka seems to go wild.

Minimal books is a test proposed by Larry Kaufman where you force as few moves as possible in each game. While he suggested each move one by one (a4, b4, c4...) I chose to run these positions: Opening position, 1.e4, 1.d4, 1.Nf3, 1.c4, 1.e4 c5, 1.d4 Nf6 and 1.e4 Nf6.

Even with bad time management, and not TB, that seems to make Rybka run into drawn engames while scoring them +2.00 and so on, I think testing with 3men tablebases (for KPK endings) is next, to see if it improves results linearly (4men would come later, then the relevant positions with 5).

Something probably went wrong in this test, as Rybka performed as I'd expect Rybka 5 to perform, or something But it showcases some nice Rybka playing style, what I'd expect to see once Rybka plays with optimal time controls, the speculative moves seem to shine!

Nice test. Do you réel that adding table bases of 3 pièces helped rybka? I don't think so. I have to analyse these games More seriously before drawing définitive conclusions.Anyway it's an interesting way of testing.